Parser.cpp revision 09a63c97b95eb4dc6fd6b2323929e8cf12af03ff
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- Parser.cpp - C Language Family Parser ----------------------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements the Parser interfaces. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Parse/Parser.h" 15500d3297d2a21edeac4d46cbcbe21bc2352c2a28Chris Lattner#include "clang/Parse/ParseDiagnostic.h" 1619510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/DeclSpec.h" 1719510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/Scope.h" 1819510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/ParsedTemplate.h" 190102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner#include "llvm/Support/raw_ostream.h" 20d167ca0d26e43292b8b9e8d5300d92784ae0e27dChris Lattner#include "RAIIObjectsForParser.h" 21fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar#include "ParsePragma.h" 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::Parser(Preprocessor &pp, Action &actions) 251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump : CrashInfo(*this), PP(pp), Actions(actions), Diags(PP.getDiagnostics()), 2608d92ecf6e5b1fd23177a08c2312b58d63d863dbChris Lattner GreaterThanIsOperator(true), ColonIsSacred(false), 2708d92ecf6e5b1fd23177a08c2312b58d63d863dbChris Lattner TemplateParameterDepth(0) { 285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Tok.setKind(tok::eof); 2923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 309e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner NumCachedScopes = 0; 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParenCount = BracketCount = BraceCount = 0; 32d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ObjCImpDecl = 0; 33fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 34fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Add #pragma handlers. These are removed and destroyed in the 35fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // destructor. 36cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(new PragmaAlignHandler(actions)); 37cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.AddPragmaHandler(AlignHandler.get()); 38cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar 39aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(new PragmaGCCVisibilityHandler(actions)); 40aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.AddPragmaHandler("GCC", GCCVisibilityHandler.get()); 41aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman 429b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis OptionsHandler.reset(new PragmaOptionsHandler(actions)); 439b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(OptionsHandler.get()); 449b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 459b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PackHandler.reset(new PragmaPackHandler(actions)); 469b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(PackHandler.get()); 479b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 489b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis UnusedHandler.reset(new PragmaUnusedHandler(actions, *this)); 499b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(UnusedHandler.get()); 509b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis 519b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis WeakHandler.reset(new PragmaWeakHandler(actions)); 529b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.AddPragmaHandler(WeakHandler.get()); 535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 550102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// If a crash happens while the parser is active, print out a line indicating 560102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner/// what the current token is. 570102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattnervoid PrettyStackTraceParserEntry::print(llvm::raw_ostream &OS) const { 580102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Token &Tok = P.getCurToken(); 59ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.is(tok::eof)) { 600102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner OS << "<eof> parser at end of file\n"; 610102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return; 620102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner } 631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 64ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner if (Tok.getLocation().isInvalid()) { 65ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner OS << "<unknown> parser at unknown location\n"; 66ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner return; 67ddcbc0a72a04a5ae2493088f1437200a9ea480b1Chris Lattner } 681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 690102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner const Preprocessor &PP = P.getPreprocessor(); 700102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner Tok.getLocation().print(OS, PP.getSourceManager()); 719fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar if (Tok.isAnnotation()) 729fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": at annotation token \n"; 739fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar else 749fa31dd71e0414e2ca905380e2f8d42710b22c82Daniel Dunbar OS << ": current parser token '" << PP.getSpelling(Tok) << "'\n"; 75f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor} 765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 770102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner 783cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(SourceLocation Loc, unsigned DiagID) { 790102c30896c83f70cf6b6519fd5c674cb981c0b5Chris Lattner return Diags.Report(FullSourceLoc(Loc, PP.getSourceManager()), DiagID); 801ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner} 811ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner 823cbfe2c4159e0a219ae660d50625c013aa4afbd0Chris LattnerDiagnosticBuilder Parser::Diag(const Token &Tok, unsigned DiagID) { 831ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner return Diag(Tok.getLocation(), DiagID); 845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 864b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \brief Emits a diagnostic suggesting parentheses surrounding a 874b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// given range. 884b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// 894b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The location where we'll emit the diagnostic. 904b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param Loc The kind of diagnostic to emit. 914b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor/// \param ParenRange Source range enclosing code that should be parenthesized. 924b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregorvoid Parser::SuggestParentheses(SourceLocation Loc, unsigned DK, 934b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor SourceRange ParenRange) { 94b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(ParenRange.getEnd()); 95b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor if (!ParenRange.getEnd().isFileID() || EndLoc.isInvalid()) { 964b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // We can't display the parentheses, so just dig the 974b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // warning/error and return. 984b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Loc, DK); 994b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor return; 1004b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } 1011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Loc, DK) 103849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") 104849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, ")"); 1054b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor} 1064b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// MatchRHSPunctuation - For punctuation with a LHS and RHS (e.g. '['/']'), 1085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// this helper function matches and consumes the specified RHS token if 1095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// present. If not present, it emits the specified diagnostic indicating 1105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// that the parser failed to match the RHS of the token at LHSLoc. LHSName 1115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// should be the name of the unmatched LHS token. 1125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerSourceLocation Parser::MatchRHSPunctuation(tok::TokenKind RHSTok, 1135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation LHSLoc) { 114a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 115000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(RHSTok)) 1165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return ConsumeAnyToken(); 117a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation R = Tok.getLocation(); 1195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *LHSName = "unknown"; 1205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::kind DID = diag::err_parse_error; 1215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (RHSTok) { 1225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: break; 1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren : LHSName = "("; DID = diag::err_expected_rparen; break; 1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace : LHSName = "{"; DID = diag::err_expected_rbrace; break; 1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: LHSName = "["; DID = diag::err_expected_rsquare; break; 1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::greater: LHSName = "<"; DID = diag::err_expected_greater; break; 1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, DID); 12928eb7e992b9a266abb300da25b6d3c1557cec361Chris Lattner Diag(LHSLoc, diag::note_matching) << LHSName; 1309fc1873a3da0af8ef91e4f1927f3540f9af2038fChris Lattner SkipUntil(RHSTok); 1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return R; 1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExpectAndConsume - The parser expects that 'ExpectedTok' is next in the 1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// input. If so, it is consumed and false is returned. 1365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 1375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If the input is malformed, this emits the specified diagnostic. Next, if 1385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipToTok is specified, it calls SkipUntil(SkipToTok). Finally, true is 1395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returned. 1405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::ExpectAndConsume(tok::TokenKind ExpectedTok, unsigned DiagID, 1415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *Msg, tok::TokenKind SkipToTok) { 142dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (Tok.is(ExpectedTok) || Tok.is(tok::code_completion)) { 1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 1455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 146a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1474b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor const char *Spelling = 0; 148b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor SourceLocation EndLoc = PP.getLocForEndOfToken(PrevTokLocation); 1491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (EndLoc.isValid() && 150b2fb6de9070fea9abc56c8e8d5469066e964cefeDouglas Gregor (Spelling = tok::getTokenSimpleSpelling(ExpectedTok))) { 1514b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor // Show what code to insert to fix this problem. 1521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(EndLoc, DiagID) 1534b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor << Msg 154849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateInsertion(EndLoc, Spelling); 1554b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor } else 1564b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor Diag(Tok, DiagID) << Msg; 1574b2d3f7bcc4df31157df443af1b80bcaa9b58bbaDouglas Gregor 1585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (SkipToTok != tok::unknown) 1595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(SkipToTok); 1605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 1625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Error recovery. 1655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 1665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 1675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// SkipUntil - Read tokens until we get to the specified token, then consume 168012cf464254804279efa84e21b4b493dde76c5f1Chris Lattner/// it (unless DontConsume is true). Because we cannot guarantee that the 1695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// token will ever occur, this skips to the next token, or to some likely 1705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// good stopping point. If StopAtSemi is true, skipping will stop at a ';' 1715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// character. 172a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// 1735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// If SkipUntil finds the specified token, it returns true, otherwise it 174a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// returns false. 1755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerbool Parser::SkipUntil(const tok::TokenKind *Toks, unsigned NumToks, 1765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool StopAtSemi, bool DontConsume) { 1775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We always want this function to skip at least one token if the first token 1785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // isn't T and if not at EOF. 1795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer bool isFirstTokenSkipped = true; 1805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 1815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we found one of the tokens, stop and return true. 1825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; i != NumToks; ++i) { 183000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(Toks[i])) { 1845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DontConsume) { 1855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Noop, don't consume the token. 1865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 1875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeAnyToken(); 1885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return true; 1905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 192a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 1935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 1945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::eof: 1955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ran out of tokens. 1965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 197dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 198dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor case tok::code_completion: 199dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor ConsumeToken(); 200dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return false; 201dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 2025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_paren: 2035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested parens. 2045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_paren, false); 2065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_square: 2085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested square brackets. 2095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_square, false); 2115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::l_brace: 2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Recursively skip properly-nested braces. 2145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::r_brace, false); 2165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 217a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Okay, we found a ']' or '}' or ')', which we think should be balanced. 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Since the user wasn't looking for this token (if they were, it would 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // already be handled), this isn't balanced. If there is a LHS token at a 2215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // higher level, we will assume that this matches the unbalanced token 2225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // and return it. Otherwise, this is a spurious RHS token, which we skip. 2235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_paren: 2245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ParenCount && !isFirstTokenSkipped) 2255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeParen(); 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_square: 2295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BracketCount && !isFirstTokenSkipped) 2305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBracket(); 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::r_brace: 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (BraceCount && !isFirstTokenSkipped) 2355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; // Matches something. 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeBrace(); 2375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 238a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::string_literal: 2405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::wide_string_literal: 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeStringToken(); 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 2445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (StopAtSemi) 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FALL THROUGH. 2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip this token. 2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer isFirstTokenSkipped = false; 253a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump } 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// Scope manipulation 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// EnterScope - Start a new scope. 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::EnterScope(unsigned ScopeFlags) { 2629e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes) { 2639e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner Scope *N = ScopeCache[--NumCachedScopes]; 26423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor N->Init(getCurScope(), ScopeFlags); 26523c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = N; 2665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 26723c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = new Scope(getCurScope(), ScopeFlags); 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 26923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor getCurScope()->setNumErrorsAtStart(Diags.getNumErrors()); 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ExitScope - Pop a scope off the scope stack. 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ExitScope() { 27423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() && "Scope imbalance!"); 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 27690ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // Inform the actions module that this scope is going away if there are any 27790ae68aae98f12fe1950c63e2f6bd0fabce6cb1eChris Lattner // decls in it. 27823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor if (!getCurScope()->decl_empty()) 27923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnPopScope(Tok.getLocation(), getCurScope()); 280a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 28123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Scope *OldScope = getCurScope(); 28223c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = OldScope->getParent(); 283a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 2849e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner if (NumCachedScopes == ScopeCacheSize) 2859e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete OldScope; 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 2879e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner ScopeCache[NumCachedScopes++] = OldScope; 2885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2895f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// C99 6.9: External Definitions. 2955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 2965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid SpencerParser::~Parser() { 2985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we still have scopes active, delete the scope tree. 29923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor delete getCurScope(); 30023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CurScope = 0; 30123c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Free the scope cache. 3039e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner for (unsigned i = 0, e = NumCachedScopes; i != e; ++i) 3049e344c65b1e8b83e1d3ada507cf653526ff2c005Chris Lattner delete ScopeCache[i]; 305fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar 306fcdd8fe26de3eee44927600bf1853e21bd90dd84Daniel Dunbar // Remove the pragma handlers we installed. 307cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar PP.RemovePragmaHandler(AlignHandler.get()); 308cbb98edd530787c2ac019e437e7c599df8004ba7Daniel Dunbar AlignHandler.reset(); 309aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman PP.RemovePragmaHandler("GCC", GCCVisibilityHandler.get()); 310aa8b0d19244a6e7e8e5798fcc6aef003c274d3e0Eli Friedman GCCVisibilityHandler.reset(); 3119b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(OptionsHandler.get()); 312861800c676004eabed5927f0552620d06c80a40aDaniel Dunbar OptionsHandler.reset(); 3139b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(PackHandler.get()); 3144726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek PackHandler.reset(); 3159b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(UnusedHandler.get()); 3164726d03ab3abce41911c31d1354a18f1258cae4dTed Kremenek UnusedHandler.reset(); 3179b36c3f0de0105e903130bbda3c4aea7d792c0afArgyrios Kyrtzidis PP.RemovePragmaHandler(WeakHandler.get()); 3189991479ad5dde617168cc1e4b18425cdbbfd9fa9Eli Friedman WeakHandler.reset(); 3195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Initialize - Warm up the parser. 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::Initialize() { 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Prime the lexer look-ahead. 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 326a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 32731e057270232c1c37602579cb6461c2704175672Chris Lattner // Create the translation unit scope. Install it as the current scope. 32823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "A scope is already active?"); 32931e057270232c1c37602579cb6461c2704175672Chris Lattner EnterScope(Scope::DeclScope); 33023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnTranslationUnitScope(Tok.getLocation(), getCurScope()); 331a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 332000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::eof) && 333f72617544287acf0281c3b1a733bcb22a02e6ca4Chris Lattner !getLang().CPlusPlus) // Empty source file is an extension in C 3345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::ext_empty_source_file); 335a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 33634870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner // Initialization for Objective-C context sensitive keywords recognition. 337a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek // Referenced in Parser::ParseObjCTypeQualifierList. 33834870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner if (getLang().ObjC1) { 339a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_in] = &PP.getIdentifierTable().get("in"); 340a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_out] = &PP.getIdentifierTable().get("out"); 341a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_inout] = &PP.getIdentifierTable().get("inout"); 342a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_oneway] = &PP.getIdentifierTable().get("oneway"); 343a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_bycopy] = &PP.getIdentifierTable().get("bycopy"); 344a526c5c67e5a0473c340903ee542ce570119665fTed Kremenek ObjCTypeQuals[objc_byref] = &PP.getIdentifierTable().get("byref"); 34534870da70fa42b0391b79627ebd0cfc6eb22213bChris Lattner } 346662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar 347662e8b5647adbb1bc9eeceece7b64600cfa87471Daniel Dunbar Ident_super = &PP.getIdentifierTable().get("super"); 34882287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson 34982287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson if (getLang().AltiVec) { 35082287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_vector = &PP.getIdentifierTable().get("vector"); 35182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson Ident_pixel = &PP.getIdentifierTable().get("pixel"); 35282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } 3535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTopLevelDecl - Parse one top-level declaration, return whatever the 3565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// action tells us to. This returns true if the EOF was encountered. 357682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattnerbool Parser::ParseTopLevelDecl(DeclGroupPtrTy &Result) { 358682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Result = DeclGroupPtrTy(); 3599299f3fa85796613cc787a2062c9562d07c8613eChris Lattner if (Tok.is(tok::eof)) { 3609299f3fa85796613cc787a2062c9562d07c8613eChris Lattner Actions.ActOnEndOfTranslationUnit(); 3619299f3fa85796613cc787a2062c9562d07c8613eChris Lattner return true; 3629299f3fa85796613cc787a2062c9562d07c8613eChris Lattner } 363a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 364bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt CXX0XAttributeList Attr; 365bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) 366bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Attr = ParseCXX0XAttributes(); 367bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Result = ParseExternalDeclaration(Attr); 3685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return false; 3695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseTranslationUnit: 3725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// translation-unit: [C99 6.9] 373a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// external-declaration 374a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// translation-unit external-declaration 3755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseTranslationUnit() { 3768935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor Initialize(); 377a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 378682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DeclGroupPtrTy Res; 37989307ffaf8acf4d6fdffd72b607ca4fbcfdffc9dSteve Naroff while (!ParseTopLevelDecl(Res)) 3805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer /*parse them all*/; 3811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 38206f548596beef4c0a227a45cba996497f99566c0Chris Lattner ExitScope(); 38323c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor assert(getCurScope() == 0 && "Scope imbalance!"); 3845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseExternalDeclaration: 38790b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner/// 388c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// external-declaration: [C99 6.9], declaration: [C++ dcl.dcl] 389c3018153a11afe91849748a93d920040a571b76cChris Lattner/// function-definition 390c3018153a11afe91849748a93d920040a571b76cChris Lattner/// declaration 391a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration 3925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition 393c3018153a11afe91849748a93d920040a571b76cChris Lattner/// [GNU] __extension__ external-declaration 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-definition 3955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-class-declaration 3965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-alias-declaration 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-protocol-definition 3985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] objc-method-definition 3995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OBJC] @end 400c19923dda3d28f67aab4726cd40bb07032758383Douglas Gregor/// [C++] linkage-specification 4015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-definition: 4025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// simple-asm-expr ';' 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 404a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// [C++0x] empty-declaration: 405a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// ';' 406a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor/// 40745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor/// [C++0x/GNU] 'extern' 'template' declaration 40809a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas GregorParser::DeclGroupPtrTy Parser::ParseExternalDeclaration(CXX0XAttributeList Attr, 40909a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor ParsingDeclSpec *DS) { 41036d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis ParenBraceBracketBalancer BalancerRAIIObj(*this); 41136d36806f1972f7ec1d2a3f59155187278c56508Argyrios Kyrtzidis 412d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *SingleDecl = 0; 4135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (Tok.getKind()) { 4145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::semi: 415a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor if (!getLang().CPlusPlus0x) 416a1d71aea847a50b3acbd187d2ae9e5c1ead0f4e2Douglas Gregor Diag(Tok, diag::ext_top_level_semi) 417849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(Tok.getLocation()); 4181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 4205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Invoke action for top-level semicolon. 421682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 42290b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::r_brace: 42390b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 42490b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner ConsumeBrace(); 425682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 42690b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner case tok::eof: 42790b93d6f6961edd8f17e089253d655892adc1ef7Chris Lattner Diag(Tok, diag::err_expected_external_declaration); 428682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 429c3018153a11afe91849748a93d920040a571b76cChris Lattner case tok::kw___extension__: { 430c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner // __extension__ silences extension warnings in the subexpression. 431c46d1a1f8af67a87689d7db9eaf96027282ccaeaChris Lattner ExtensionRAIIObject O(Diags); // Use RAII to do this. 43239146d6497ad5e7ca8ef639221e7b3e15d07c888Chris Lattner ConsumeToken(); 433bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 434c3018153a11afe91849748a93d920040a571b76cChris Lattner } 435dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson case tok::kw_asm: { 436bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr.HasAttr) 437bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt Diag(Attr.Range.getBegin(), diag::err_attributes_not_allowed) 438bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt << Attr.Range; 439bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 44060d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result(ParseSimpleAsm()); 441a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 4423f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson ExpectAndConsume(tok::semi, diag::err_expected_semi_after, 4433f9424f3206b834b5dd0e7c403348651ab6fafbbAnders Carlsson "top-level asm block"); 444dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson 445682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (Result.isInvalid()) 446682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 4479ae2f076ca5ab1feb3ba95629099ec2319833701John McCall SingleDecl = Actions.ActOnFileScopeAsmDecl(Tok.getLocation(), Result.get()); 448682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 449dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson } 4505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::at: 451682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // @ is not a legal token unless objc is enabled, no need to check for ObjC. 452682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// FIXME: ParseObjCAtDirectives should return a DeclGroup for things like 453682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner /// @class foo, bar; 454682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCAtDirectives(); 455682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 4565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::minus: 4575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::plus: 458682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner if (!getLang().ObjC1) { 459682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner Diag(Tok, diag::err_expected_external_declaration); 460682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner ConsumeToken(); 461682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 462682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 463682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner SingleDecl = ParseObjCMethodDefinition(); 464682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner break; 465791215b7a24666912c0b71175d2ca5ba082f666eDouglas Gregor case tok::code_completion: 46623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), 467e6b1bb6e7fe906d164637ca33503b8fafdbc99e5Douglas Gregor ObjCImpDecl? Action::PCC_ObjCImplementation 468e6b1bb6e7fe906d164637ca33503b8fafdbc99e5Douglas Gregor : Action::PCC_Namespace); 469dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor ConsumeCodeCompletionToken(); 470bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseExternalDeclaration(Attr); 471f780abc21c39cd4731b9e38f2d2d9f7d1510bd7bDouglas Gregor case tok::kw_using: 4728f08cb7d0b97786b17ef05e05caa55aad4d6bd39Chris Lattner case tok::kw_namespace: 4735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case tok::kw_typedef: 474adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_template: 475adcac8824a9cff13f1ef61a69e38c1041cba12eeDouglas Gregor case tok::kw_export: // As in 'export template' 476511d7aba3b12853fdb88729a0313b80a60eab8adAnders Carlsson case tok::kw_static_assert: 477bae35118fc5cea2da08567dbb9763af7f906dae2Chris Lattner // A function definition cannot start with a these keywords. 47897144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner { 47997144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner SourceLocation DeclEnd; 480bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt return ParseDeclaration(Declarator::FileContext, DeclEnd, Attr); 48197144fc41a9419bf6d74fc9450e8ef3f6e11f7e0Chris Lattner } 48245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor case tok::kw_extern: 48345f965581935791a018df829a14dff53c1dd8f47Douglas Gregor if (getLang().CPlusPlus && NextToken().is(tok::kw_template)) { 48445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Extern templates 48545f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation ExternLoc = ConsumeToken(); 48645f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation TemplateLoc = ConsumeToken(); 48745f965581935791a018df829a14dff53c1dd8f47Douglas Gregor SourceLocation DeclEnd; 48845f965581935791a018df829a14dff53c1dd8f47Douglas Gregor return Actions.ConvertDeclToDeclGroup( 48945f965581935791a018df829a14dff53c1dd8f47Douglas Gregor ParseExplicitInstantiation(ExternLoc, TemplateLoc, DeclEnd)); 49045f965581935791a018df829a14dff53c1dd8f47Douglas Gregor } 4911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49245f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // FIXME: Detect C++ linkage specifications here? 4931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49445f965581935791a018df829a14dff53c1dd8f47Douglas Gregor // Fall through to handle other declarations or function definitions. 4951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer default: 4975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We can't tell whether this is a function-definition or declaration yet. 49809a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor if (DS) 49909a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor return ParseDeclarationOrFunctionDefinition(*DS, Attr.AttrList); 50009a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor else 50109a63c97b95eb4dc6fd6b2323929e8cf12af03ffDouglas Gregor return ParseDeclarationOrFunctionDefinition(Attr.AttrList); 5025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 5031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 504682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // This routine returns a DeclGroup, if the thing we parsed only contains a 505682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner // single decl, convert it now. 506682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(SingleDecl); 5075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 5085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5091426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5101426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, continues a declaration or declaration list. 511c82daefa3062721e98947e08193cd81b4e9df915Chris Lattnerbool Parser::isDeclarationAfterDeclarator() const { 5121426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor return Tok.is(tok::equal) || // int X()= -> not a function def 5131426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::comma) || // int X(), -> not a function def 5141426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::semi) || // int X(); -> not a function def 5151426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw_asm) || // int X() __asm__ -> not a function def 5161426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::kw___attribute) || // int X() __attr__ -> not a function def 5171426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor (getLang().CPlusPlus && 5181426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor Tok.is(tok::l_paren)); // int X(0) -> not a function def [C++] 5191426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5201426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5211426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// \brief Determine whether the current token, if it occurs after a 5221426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor/// declarator, indicates the start of a function definition. 523004659a56916f2f81ede507c12516c146d6c0df3Chris Lattnerbool Parser::isStartOfFunctionDefinition(const ParsingDeclarator &Declarator) { 524004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner assert(Declarator.getTypeObject(0).Kind == DeclaratorChunk::Function && 525004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner "Isn't a function declarator"); 5265d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner if (Tok.is(tok::l_brace)) // int X() {} 5275d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return true; 5285d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner 529004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner // Handle K&R C argument lists: int X(f) int f; {} 530004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (!getLang().CPlusPlus && 531004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner Declarator.getTypeObject(0).Fun.isKNRPrototype()) 532004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner return isDeclarationSpecifier(); 533004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner 5345d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner return Tok.is(tok::colon) || // X() : Base() {} (used for ctors) 5355d1c6198cfe55f8de025902c621c0721b640ff60Chris Lattner Tok.is(tok::kw_try); // X() try { ... } 5361426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor} 5371426e534b4fca6a05b1120d634aae46be79ca17cDouglas Gregor 5385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseDeclarationOrFunctionDefinition - Parse either a function-definition or 5395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// a declaration. We can't tell which we have until we read up to the 540c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// compound-statement in function-definition. TemplateParams, if 541c4b4e7b8f6ca9b036824e048af49cd2a52b57cdfDouglas Gregor/// non-NULL, provides the template parameters when we're parsing a 5421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// C++ template-declaration. 5435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 5445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// function-definition: [C99 6.9.1] 545a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 546a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 547a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 548a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// 5495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// declaration: [C99 6.7] 550697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// declaration-specifiers init-declarator-list[opt] ';' 551697e15f2a028f8997cccb24ecd05099988cfb1a9Chris Lattner/// [!C99] init-declarator-list ';' [TODO: warn in c99 mode] 5525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [OMP] threadprivate-directive [TODO] 5535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 554682bf92db408a6cbc3d37b5496a99b6ef85041ecChris LattnerParser::DeclGroupPtrTy 5553acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(ParsingDeclSpec &DS, 5563acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AttributeList *Attr, 557bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt AccessSpecifier AS) { 5585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 559bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt if (Attr) 560bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt DS.AddAttributes(Attr); 561bbd37c62e34db3f5a95c899723484a76c71d7757Sean Hunt 5620efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC_top_level); 563a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 5645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };" 5655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // declaration-specifiers init-declarator-list[opt] ';' 566000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 5675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 568d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS); 56954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.complete(TheDecl); 570682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 5715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 572a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 573246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // ObjC2 allows prefix attributes on class interfaces and protocols. 574246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // FIXME: This still needs better diagnostics. We should only accept 575246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar // attributes here, no types, etc. 576000732226610650837478cba97843d19b75f648eChris Lattner if (getLang().ObjC2 && Tok.is(tok::at)) { 577dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff SourceLocation AtLoc = ConsumeToken(); // the "@" 5781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!Tok.isObjCAtKeyword(tok::objc_interface) && 579246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar !Tok.isObjCAtKeyword(tok::objc_protocol)) { 580246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar Diag(Tok, diag::err_objc_unexpected_attr); 581cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner SkipUntil(tok::semi); // FIXME: better skip? 582682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return DeclGroupPtrTy(); 583cb53b361bce341c8591333c6997f62e480acc0b4Chris Lattner } 584d8ac05753dc4506224d445ff98399c01da3136e5John McCall 58554abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall DS.abort(); 58654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 5870de2ae28c603322f05e2d9200c7d457c8b928983Fariborz Jahanian const char *PrevSpec = 0; 588fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 589fec54013fcd0eb72642741584ca04c1bc292bef8John McCall if (DS.SetTypeSpecType(DeclSpec::TST_unspecified, AtLoc, PrevSpec, DiagID)) 590fec54013fcd0eb72642741584ca04c1bc292bef8John McCall Diag(AtLoc, DiagID) << PrevSpec; 5911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 592d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = 0; 593246e70f69cb8aeb67225c54690f1c6b25abd5a86Daniel Dunbar if (Tok.isObjCAtKeyword(tok::objc_protocol)) 594682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtProtocolDeclaration(AtLoc, DS.getAttributes()); 595682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner else 596682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner TheDecl = ParseObjCAtInterfaceDeclaration(AtLoc, DS.getAttributes()); 597682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 598dac269b65eed82182fc3e96566dedd6562dfe11eSteve Naroff } 599a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 600c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // If the declspec consisted only of 'extern' and we have a string 601c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // literal following it, this must be a C++ linkage specifier like 602c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner // 'extern "C"'. 6033c6f6a7a1bb9969112617a26d2333bab2f6efd65Chris Lattner if (Tok.is(tok::string_literal) && getLang().CPlusPlus && 604c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner DS.getStorageClassSpec() == DeclSpec::SCS_extern && 605682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner DS.getParsedSpecifiers() == DeclSpec::PQ_StorageClassSpecifier) { 606d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *TheDecl = ParseLinkage(DS, Declarator::FileContext); 607682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner return Actions.ConvertDeclToDeclGroup(TheDecl); 608682bf92db408a6cbc3d37b5496a99b6ef85041ecChris Lattner } 609c6fdc34ac0183bfa03d65f317c78b7bdac52897eChris Lattner 610d8ac05753dc4506224d445ff98399c01da3136e5John McCall return ParseDeclGroup(DS, Declarator::FileContext, true); 6115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 6125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6133acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::DeclGroupPtrTy 6143acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz JahanianParser::ParseDeclarationOrFunctionDefinition(AttributeList *Attr, 6153acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian AccessSpecifier AS) { 6163acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian ParsingDeclSpec DS(*this); 6173acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian return ParseDeclarationOrFunctionDefinition(DS, Attr, AS); 6183acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian} 6193acd9aaa4ddd14afecb4f1c02ca6f585a6d51849Fariborz Jahanian 6205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseFunctionDefinition - We parsed and verified that the specified 6215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// Declarator is well formed. If this is a K&R-style function, read the 6225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// parameters declaration-list, then start the compound-statement. 6235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 624a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// function-definition: [C99 6.9.1] 625a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// decl-specs declarator declaration-list[opt] compound-statement 626a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner/// [C90] function-definition: [C99 6.7.1] - implicit int result 627a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump/// [C90] decl-specs[opt] declarator declaration-list[opt] compound-statement 6287ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 62923c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// decl-specifier-seq[opt] declarator ctor-initializer[opt] 63023c4b1883b13dc17484b7214091b73f3ba29096eChris Lattner/// function-body 6317ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor/// [C++] function-definition: [C++ 8.4] 632d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl/// decl-specifier-seq[opt] declarator function-try-block 6335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 634d226f65006733ed7f709c3174f22ce33391cb58fJohn McCallDecl *Parser::ParseFunctionDefinition(ParsingDeclarator &D, 63552591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor const ParsedTemplateInfo &TemplateInfo) { 6365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk &FnTypeInfo = D.getTypeObject(0); 6375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(FnTypeInfo.Kind == DeclaratorChunk::Function && 6385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "This isn't a function declarator!"); 6395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = FnTypeInfo.Fun; 640a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 641a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // If this is C90 and the declspecs were completely missing, fudge in an 642a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // implicit int. We do this here because this is the only place where 643a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner // declaration-specifiers are completely optional in the grammar. 6442a327d11a07dfbdf20910cebbae38910eda111fdChris Lattner if (getLang().ImplicitInt && D.getDeclSpec().isEmpty()) { 645a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner const char *PrevSpec; 646fec54013fcd0eb72642741584ca04c1bc292bef8John McCall unsigned DiagID; 64731c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getMutableDeclSpec().SetTypeSpecType(DeclSpec::TST_int, 64831c286803c60c59d314525e047d0e72f9a1cb55bChris Lattner D.getIdentifierLoc(), 649fec54013fcd0eb72642741584ca04c1bc292bef8John McCall PrevSpec, DiagID); 650ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl D.SetRangeBegin(D.getDeclSpec().getSourceRange().getBegin()); 651a798ebc82627ea9cb7a00da07d2b60f9f2114f69Chris Lattner } 652a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this declaration was formed with a K&R-style identifier list for the 6545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // arguments, parse declarations for all of the args next. 6555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // int foo(a,b) int a; float b; {} 656004659a56916f2f81ede507c12516c146d6c0df3Chris Lattner if (FTI.isKNRPrototype()) 6575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseKNRParamDeclarations(D); 6585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6597ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // We should have either an opening brace or, in a C++ constructor, 6607ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // we may have a colon. 661d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.isNot(tok::l_brace) && Tok.isNot(tok::colon) && 662d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl Tok.isNot(tok::kw_try)) { 6635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_fn_body); 6645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 6655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip over garbage, until we get to '{'. Don't eat the '{'. 6665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::l_brace, true, true); 667a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 6685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we didn't find the '{', bail out. 669000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_brace)) 670d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall return 0; 6715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 672a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 673b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Enter a scope for the function body. 6748935b8b49053122ddd3ab4cd59af0fe5eb9c23cfDouglas Gregor ParseScope BodyScope(this, Scope::FnScope|Scope::DeclScope); 675a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 676b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // Tell the actions module that we have entered a function definition with the 677b652cea7d7b70ebe3744fb6d72c9ad9cf3c95429Chris Lattner // specified Declarator for the function. 678d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Res = TemplateInfo.TemplateParams? 67923c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnStartOfFunctionTemplateDef(getCurScope(), 68052591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor Action::MultiTemplateParamsArg(Actions, 68152591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->data(), 68252591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor TemplateInfo.TemplateParams->size()), 68352591bf224b2c43e2b00e265bb8599a620081925Douglas Gregor D) 68423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor : Actions.ActOnStartOfFunctionDef(getCurScope(), D); 685a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 68654abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclarator context before we parse the body. 68754abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.complete(Res); 68854abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 68954abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // Break out of the ParsingDeclSpec context, too. This const_cast is 69054abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall // safe because we're always the sole owner. 69154abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall D.getMutableDeclSpec().abort(); 69254abf7d4fa3123b8324c09d2a4dfb789fd818403John McCall 693d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl if (Tok.is(tok::kw_try)) 694d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl return ParseFunctionTryBlock(Res); 695d3a413d3b8eb39bcee5944bc545d9997c1abe492Sebastian Redl 6967ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // If we have a colon, then we're probably parsing a C++ 6977ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor // ctor-initializer. 698d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (Tok.is(tok::colon)) { 6997ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor ParseConstructorInitializer(Res); 700d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall 701d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall // Recover from error. 702d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall if (!Tok.is(tok::l_brace)) { 7039ae2f076ca5ab1feb3ba95629099ec2319833701John McCall Actions.ActOnFinishFunctionBody(Res, 0); 704d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall return Res; 705d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } 706d6ca8da0f5a4115813055729faaa5128e994806dJohn McCall } else 707393612e6c7727f1fee50039254d9f434364cc0b2Fariborz Jahanian Actions.ActOnDefaultCtorInitializers(Res); 7087ad8390f7992ab7f19b1460c5f0b9d96f165c4e9Douglas Gregor 70940e9bc84a2ab49fc33c2b1a95c6674ab2b820e9eChris Lattner return ParseFunctionStatementBody(Res); 7105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 7115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseKNRParamDeclarations - Parse 'declaration-list[opt]' which provides 7135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// types for a function with a K&R-style identifier list for arguments. 7145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid Parser::ParseKNRParamDeclarations(Declarator &D) { 7155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // We know that the top-level of this declarator is a function. 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclaratorChunk::FunctionTypeInfo &FTI = D.getTypeObject(0).Fun; 7175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 71804421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // Enter function-declaration scope, limiting any declarators to the 71904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner // function prototype scope, including parameter declarators. 7203218c4bb3b5d7250f12420de6db7ef3e3f805a75Douglas Gregor ParseScope PrototypeScope(this, Scope::FunctionPrototypeScope|Scope::DeclScope); 72104421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner 7225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Read all the argument declarations. 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (isDeclarationSpecifier()) { 7245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SourceLocation DSStart = Tok.getLocation(); 725a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the common declaration-specifiers piece. 7275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DeclSpec DS; 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarationSpecifiers(DS); 729a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: 'each declaration in the declaration list shall have at 7315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // least one declarator'. 7325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // NOTE: GCC just makes this an ext-warn. It's not clear what it does with 7335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the declarations though. It's trivial to ignore them, really hard to do 7345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // anything else with them. 735000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 7365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DSStart, diag::err_declaration_does_not_declare_param); 7375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 7385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer continue; 7395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 740a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: Declarations shall contain no storage-class specifiers other 7425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // than register. 7435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getStorageClassSpec() != DeclSpec::SCS_unspecified && 7445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getStorageClassSpec() != DeclSpec::SCS_register) { 7455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getStorageClassSpecLoc(), 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.isThreadSpecified()) { 7505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(DS.getThreadSpecLoc(), 7515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer diag::err_invalid_storage_class_in_func_decl); 7525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.ClearStorageClassSpecs(); 7535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 754a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the first declarator attached to this declspec. 7565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Declarator ParmDeclarator(DS, Declarator::KNRTypeListContext); 7575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 7585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Handle the full declarator list. 7605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer while (1) { 7615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If attributes are present, parse them. 76233efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington if (Tok.is(tok::kw___attribute)) { 76333efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington SourceLocation Loc; 76433efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington AttributeList *AttrList = ParseGNUAttributes(&Loc); 76533efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington ParmDeclarator.AddAttributes(AttrList, Loc); 76633efe2f088ae40b5129fe4ab021912e80129e155Richard Pennington } 767a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Ask the actions module to compute the type for this declarator. 769d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall Decl *Param = 77023c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator); 7712bd42fadafddc8acf744b57a970bdc96a077c617Steve Naroff 772a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump if (Param && 7735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // A missing identifier has already been diagnosed. 7745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.getIdentifier()) { 7755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 7765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Scan the argument list looking for the correct param to apply this 7775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // type. 7785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0; ; ++i) { 7795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.9.1p6: those declarators shall declare only identifiers from 7805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the identifier list. 7815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (i == FTI.NumArgs) { 7821ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(ParmDeclarator.getIdentifierLoc(), diag::err_no_matching_param) 7836898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 7845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 786a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 7875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.ArgInfo[i].Ident == ParmDeclarator.getIdentifier()) { 7885f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Reject redefinitions of parameters. 78904421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner if (FTI.ArgInfo[i].Param) { 7905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(ParmDeclarator.getIdentifierLoc(), 7911ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner diag::err_param_redefinition) 7926898e33d0b28346a4dbe9a666e0e4188fea80460Chris Lattner << ParmDeclarator.getIdentifier(); 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 79404421087832a031c90bd58f128c7c0e741db8dd2Chris Lattner FTI.ArgInfo[i].Param = Param; 7955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 7975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If we don't have a comma, it is either the end of the list (a ';') or 8025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // an error, bail out. 803000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::comma)) 8045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 805a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Consume the comma. 8075f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 808a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Parse the next declarator. 8105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParmDeclarator.clear(); 8115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ParseDeclarator(ParmDeclarator); 8125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 813a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 814000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) { 8155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 8165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 8175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_parse_error); 8185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Skip to end of block or statement 8195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer SkipUntil(tok::semi, true); 820000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.is(tok::semi)) 8215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ConsumeToken(); 8225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 824a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // The actions module must verify that all arguments were declared. 82623c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Actions.ActOnFinishKNRParamDeclarations(getCurScope(), D, Tok.getLocation()); 8275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseAsmStringLiteral - This is just a normal string-literal, but is not 8315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// allowed to be a wide string, and is not subject to character translation. 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] asm-string-literal: 8345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// string-literal 8355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 83660d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseAsmStringLiteral() { 8375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (!isTokenStringLiteral()) { 8385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer Diag(Tok, diag::err_expected_string_literal); 83961364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 841a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 84260d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Res(ParseStringLiteralExpression()); 843effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl if (Res.isInvalid()) return move(Res); 844a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TODO: Diagnose: wide string literal in 'asm' 846a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 847effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Res); 8485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 8505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ParseSimpleAsm 8515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 8525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// [GNU] simple-asm-expr: 8535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 'asm' '(' asm-string-literal ')' 8545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// 85560d7b3a319d84d688752be3870615ac0f111fb16John McCallParser::ExprResult Parser::ParseSimpleAsm(SourceLocation *EndLoc) { 856000732226610650837478cba97843d19b75f648eChris Lattner assert(Tok.is(tok::kw_asm) && "Not an asm!"); 857dfab6cb59a703f2ce4d58371652ce879f4c85a09Anders Carlsson SourceLocation Loc = ConsumeToken(); 858a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 8597a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall if (Tok.is(tok::kw_volatile)) { 860841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall // Remove from the end of 'asm' to the end of 'volatile'. 861841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall SourceRange RemovalRange(PP.getLocForEndOfToken(Loc), 862841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall PP.getLocForEndOfToken(Tok.getLocation())); 863841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall 864841d5e607f81bf5627e47d0c62ead29f28b5b0c2John McCall Diag(Tok, diag::warn_file_asm_volatile) 865849b243d4065f56742a4677d6dc8277609a151f8Douglas Gregor << FixItHint::CreateRemoval(RemovalRange); 8667a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall ConsumeToken(); 8677a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall } 8687a6ae743b2ecfdfadadf7df53b569a9a3871a8fdJohn McCall 869000732226610650837478cba97843d19b75f648eChris Lattner if (Tok.isNot(tok::l_paren)) { 8701ab3b96de160e4fbffec2a776e284a48a3bb543dChris Lattner Diag(Tok, diag::err_expected_lparen_after) << "asm"; 87161364dddc33383e62cfe3b841dbc0f471280d95bSebastian Redl return ExprError(); 8725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 873a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 874ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = ConsumeParen(); 875a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 87660d7b3a319d84d688752be3870615ac0f111fb16John McCall ExprResult Result(ParseAsmStringLiteral()); 877a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 878ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (Result.isInvalid()) { 879ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl SkipUntil(tok::r_paren, true, true); 880ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 881ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Tok.getLocation(); 882ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl ConsumeAnyToken(); 883ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } else { 884ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl Loc = MatchRHSPunctuation(tok::r_paren, Loc); 885ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl if (EndLoc) 886ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl *EndLoc = Loc; 887ab197baec16bacade82325fb274cf6b992ac5d8aSebastian Redl } 888a6f0177a864ac478eb9890319f2e8ea03695e91dMike Stump 889effa8d1c97b00a3f53e972b0e61d9aade5ea1c57Sebastian Redl return move(Result); 8905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 8915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 892eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateTypeOrScopeToken - If the current token position is on a 893eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typename (possibly qualified in C++) or a C++ scope specifier not followed 894eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// by a typename, TryAnnotateTypeOrScopeToken will replace one or more tokens 895eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// with a single annotation token representing the typename or C++ scope 896eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// respectively. 897eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// This simplifies handling of C++ scope specifiers and allows efficient 898eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// backtracking without the need to re-parse and resolve nested-names and 899eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// typenames. 90044802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// It will mainly be called when we expect to treat identifiers as typenames 90144802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// (if they are typenames). For example, in C we do not expect identifiers 90244802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// inside expressions to be treated as typenames so it will not be called 90344802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// for expressions in C. 90444802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// The benefit for C/ObjC is that a typename will be annotated and 905b43a50ff1b0b171ece84425b0ad83a9a31f038faSteve Naroff/// Actions.getTypeName will not be needed to be called again (e.g. getTypeName 90644802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// will not be called twice, once to check whether we have a declaration 90744802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// specifier, and another one to get the actual type inside 90844802cc435d5122701e4f1a9354381cff4b171c0Argyrios Kyrtzidis/// ParseDeclarationSpecifiers). 909a7bc7c880f86bc180684ef032d06df51bcae7a23Chris Lattner/// 9109ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall/// This returns true if an error occurred. 9111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 91255a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 91355a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 914495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateTypeOrScopeToken(bool EnteringContext) { 9151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon) 916ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall || Tok.is(tok::kw_typename) || Tok.is(tok::annot_cxxscope)) && 9177452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 9181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 919d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::kw_typename)) { 920d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // Parse a C++ typename-specifier, e.g., "typename T::type". 921d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 922d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // typename-specifier: 923d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // 'typename' '::' [opt] nested-name-specifier identifier 9241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // 'typename' '::' [opt] nested-name-specifier template [opt] 9251734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor // simple-template-id 926d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor SourceLocation TypenameLoc = ConsumeToken(); 927d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor CXXScopeSpec SS; 928b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, /*ObjectType=*/ParsedType(), false)) 9299ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9309ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall if (!SS.isSet()) { 931d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Diag(Tok.getLocation(), diag::err_expected_qualified_after_typename); 9329ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 933d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 934d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 935d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor TypeResult Ty; 936d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor if (Tok.is(tok::identifier)) { 937d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor // FIXME: check whether the next token is '<', first! 93823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 9391a15dae8be2b28e02b6639aa92b832465c5be420Douglas Gregor *Tok.getIdentifierInfo(), 940d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor Tok.getLocation()); 9411734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else if (Tok.is(tok::annot_template_id)) { 9421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 9431734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 9441734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor if (TemplateId->Kind == TNK_Function_template) { 9451734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_typename_refers_to_non_type_template) 9461734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << Tok.getAnnotationRange(); 9479ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9481734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 949d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 95031a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(0); 9511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump assert(Tok.is(tok::annot_typename) && 9521734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor "AnnotateTemplateIdTokenAsType isn't working properly"); 95331a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor if (Tok.getAnnotationValue()) 95423c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor Ty = Actions.ActOnTypenameType(getCurScope(), TypenameLoc, SS, 9551a15dae8be2b28e02b6639aa92b832465c5be420Douglas Gregor SourceLocation(), 956b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall getTypeAnnotation(Tok)); 95731a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor else 95831a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor Ty = true; 9591734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } else { 9601734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Diag(Tok, diag::err_expected_type_name_after_typename) 9611734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor << SS.getRange(); 9629ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 9631734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor } 9641734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor 96539d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl SourceLocation EndLoc = Tok.getLastLoc(); 9661734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setKind(tok::annot_typename); 967b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty.isInvalid() ? ParsedType() : Ty.get()); 96839d67117f896c6e2faa727671ef64b3c04b0e3feSebastian Redl Tok.setAnnotationEndLoc(EndLoc); 9691734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor Tok.setLocation(TypenameLoc); 9701734317845d60307d474b5da8a8d33adbaf5e723Douglas Gregor PP.AnnotateCachedTokens(Tok); 9719ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 972d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor } 973d57959af02b4af695276f4204443afe6e5d86bd8Douglas Gregor 974ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // Remembers whether the token was originally a scope annotation. 975ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall bool wasScopeAnnotation = Tok.is(tok::annot_cxxscope); 976ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall 977eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis CXXScopeSpec SS; 9784bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis if (getLang().CPlusPlus) 979b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 9809ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 981eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 982eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis if (Tok.is(tok::identifier)) { 983608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // Determine whether the identifier is a type name. 984b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParsedType Ty = Actions.getTypeName(*Tok.getIdentifierInfo(), 985b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Tok.getLocation(), getCurScope(), 986b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall &SS)) { 987608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // This is a typename. Replace the current token in-place with an 988608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // annotation type token. 989b31757b68afe06ba442a05775d08fe7aa0f6f889Chris Lattner Tok.setKind(tok::annot_typename); 990b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall setTypeAnnotation(Tok, Ty); 991608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setAnnotationEndLoc(Tok.getLocation()); 992608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner if (SS.isNotEmpty()) // it was a C++ qualified type name. 993608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner Tok.setLocation(SS.getBeginLoc()); 9941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 995608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // In case the tokens were cached, have Preprocessor replace 996608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them with the annotation token. 997608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner PP.AnnotateCachedTokens(Tok); 9989ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 9991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 100039a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor 100139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (!getLang().CPlusPlus) { 1002608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // If we're in C, we can't have :: tokens at all (the lexer won't return 1003608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner // them). If the identifier is not a type, then it can't be scope either, 10041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // just early exit. 1005608d1fc9c4db3e3769f03a4f989d7692aefbf073Chris Lattner return false; 1006eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis } 10071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 100839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // If this is a template-id, annotate with a template-id or type token. 100955f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor if (NextToken().is(tok::less)) { 10107532dc66648cfe7432c9fe66dec5225f0ab301c6Douglas Gregor TemplateTy Template; 1011014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor UnqualifiedId TemplateName; 1012014e88d94ff83e3aad4e33b16413a2d1817ec208Douglas Gregor TemplateName.setIdentifier(Tok.getIdentifierInfo(), Tok.getLocation()); 10131fd6d44d7ca97631497551bbf98866263143d706Douglas Gregor bool MemberOfUnknownSpecialization; 10141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (TemplateNameKind TNK 10157c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara = Actions.isTemplateName(getCurScope(), SS, 10167c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara /*hasTemplateKeyword=*/false, TemplateName, 1017b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall /*ObjectType=*/ ParsedType(), 1018b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall EnteringContext, 10197c15353ccaed24f2df932571166bf305c1b98b6dAbramo Bagnara Template, MemberOfUnknownSpecialization)) { 1020ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor // Consume the identifier. 1021ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor ConsumeToken(); 1022ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor if (AnnotateTemplateIdToken(Template, TNK, &SS, TemplateName)) { 1023c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // If an unrecoverable error occurred, we need to return true here, 1024c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // because the token stream is in a damaged state. We may not return 1025c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner // a valid identifier. 10269ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1027c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner } 1028ca1bdd7c269a2390d43c040a60511edd017ee130Douglas Gregor } 102955f6b14230c94272efbbcdd89a92224c8db9f225Douglas Gregor } 1030d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 103139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // The current token, which is either an identifier or a 103239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id, is not part of the annotation. Fall through to 103339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // push that token back into the stream and complete the C++ scope 103439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // specifier annotation. 10351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1036eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 103739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor if (Tok.is(tok::annot_template_id)) { 10381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump TemplateIdAnnotation *TemplateId 103939a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue()); 1040c45c232440dfafedca1a3773b904fb42609b1b19Douglas Gregor if (TemplateId->Kind == TNK_Type_template) { 104139a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // A template-id that refers to a type was parsed into a 104239a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // template-id annotation in a context where we weren't allowed 104339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // to produce a type annotation token. Update the template-id 104439a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor // annotation token to a type annotation token now. 104531a19b6989bbf326d2de5ae12e712e2a65ca9c34Douglas Gregor AnnotateTemplateIdTokenAsType(&SS); 10469ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 104739a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 104839a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor } 1049d6fb7ef028d9aa0b3e8943b7bc049c524437b407Douglas Gregor 10506ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (SS.isEmpty()) 10519ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 10521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 10536ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // A C++ scope specifier that isn't followed by a typename. 10546ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 10556ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 10566ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 10576ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 10586ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 10596ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 10606ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 10613507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 10626ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 10636ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 1064ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // In case the tokens were cached, have Preprocessor replace them 1065ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // with the annotation token. We don't need to do this if we've 1066ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall // just reverted back to the state we were in before being called. 1067ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall if (!wasScopeAnnotation) 1068ae03cb5a84d13c7a0d4b21865bd63aabd18120d2John McCall PP.AnnotateCachedTokens(Tok); 10699ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1070eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 1071eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 1072eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis/// TryAnnotateScopeToken - Like TryAnnotateTypeOrScopeToken but only 107339a8de10c18365bde7062d8959b7ed525449c561Douglas Gregor/// annotates C++ scope specifiers and template-ids. This returns 1074c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// true if the token was annotated or there was an error that could not be 1075c8e27cc402043ec86c1698c09e4ee9e415b16207Chris Lattner/// recovered from. 10761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 107755a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// Note that this routine emits an error if you call it with ::new or ::delete 107855a7cefc846765ac7d142a63f773747a20518d71Chris Lattner/// as the current tokens, so only call it in contexts where these are invalid. 1079495c35d291da48c4f5655bbb54d15128ddde0d4dDouglas Gregorbool Parser::TryAnnotateCXXScopeToken(bool EnteringContext) { 10804bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis assert(getLang().CPlusPlus && 10816ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner "Call sites of this function should be guarded by checking for C++"); 10827452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner assert((Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) && 10837452c6fc567ea1799f617395d0fa4c7ed075e5d9Chris Lattner "Cannot be a type or scope token!"); 1084eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 10854bdd91c09fd59e0c154d759288beff300e31e1d0Argyrios Kyrtzidis CXXScopeSpec SS; 1086b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext)) 10879ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return true; 1088edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin if (SS.isEmpty()) 10899ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1090eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis 10916ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // Push the current token back into the token stream (or revert it if it is 10926ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // cached) and use an annotation scope token for current token. 10936ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner if (PP.isBacktrackEnabled()) 10946ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.RevertCachedTokens(1); 10956ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner else 10966ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.EnterToken(Tok); 10976ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setKind(tok::annot_cxxscope); 10983507369940bfb269551bfa1fec812481f60e3552Douglas Gregor Tok.setAnnotationValue(SS.getScopeRep()); 10996ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner Tok.setAnnotationRange(SS.getRange()); 11006ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner 11016ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // In case the tokens were cached, have Preprocessor replace them with the 11026ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner // annotation token. 11036ec76d45bd3111013c357f16e08720407c2f9ae8Chris Lattner PP.AnnotateCachedTokens(Tok); 11049ba6166f4a78722e7df8ffbd64eb788bfdf2764aJohn McCall return false; 1105eb83ecde1a822b1c38cd060a85a08c1ac9f82cf8Argyrios Kyrtzidis} 11066c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall 1107dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregorvoid Parser::CodeCompletionRecovery() { 110823c94dbb6631fecdb55ba401aa93722803d980c6Douglas Gregor for (Scope *S = getCurScope(); S; S = S->getParent()) { 1109dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::FnScope) { 1110e6b1bb6e7fe906d164637ca33503b8fafdbc99e5Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), Action::PCC_RecoveryInFunction); 1111dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return; 1112dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1113dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1114dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor if (S->getFlags() & Scope::ClassScope) { 1115e6b1bb6e7fe906d164637ca33503b8fafdbc99e5Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), Action::PCC_Class); 1116dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor return; 1117dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1118dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor } 1119dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 1120e6b1bb6e7fe906d164637ca33503b8fafdbc99e5Douglas Gregor Actions.CodeCompleteOrdinaryName(getCurScope(), Action::PCC_Namespace); 1121dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor} 1122dc8453422bec3bbf70c03920e01498d75783d122Douglas Gregor 11236c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// Anchor the Parser::FieldCallback vtable to this translation unit. 11246c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// We use a spurious method instead of the destructor because 11256c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// destroying FieldCallbacks can actually be slightly 11266c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall// performance-sensitive. 11276c94a6d77f456f23ecd4c2061e6413786b5e6571John McCallvoid Parser::FieldCallback::_anchor() { 11286c94a6d77f456f23ecd4c2061e6413786b5e6571John McCall} 1129